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ADP3212MNR2G Arkusz danych(PDF) 6 Page - ON Semiconductor

Numer części ADP3212MNR2G
Szczegółowy opis  7-Bit Programmable, 3-Phase, Mobile CPU Synchronous Buck Controller
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ADP3212/NCP3218
Rev. SpA | Page 6 of 43
Parameter
Symbol
Conditions
Min
Typ
Max
Units
ILIM = −5
μA
3.5
4
4.5
-
IMON Clamp Voltage
VMAXMON
Relative to FBRTN, ILIMP = −30 uA
1.0
1.15
V
PULSE WIDTH
MODULATOR
CLOCK OSCILLATOR
RT Voltage
VRT
VARFREQ = high, RT = 125 k
Ω, V
VID
= 1.5000 V
VARFREQ = low
See also VRT(VVID) formula
1.125
0.9
1.25
1
1.375
1.1
V
V
PWM Clock Frequency
Range2
fCLK
Operation of interest
0.3
3
MHz
PWM Clock Frequency
fCLK
TA = +25°C, VVID = 1.2000 V
RT = 72 k
Ω
RT = 120 k
Ω
RT = 180 k
Ω
1100
700
500
1257
800
550
1400
900
600
kHz
kHz
kHz
RAMP GENERATOR
RAMP Voltage
VRAMP
EN = high, IRAMP = 60 μA
EN = low
0.9
1
VIN
1.1
V
V
RAMP Current Range2
IRAMP
EN = high
1
100
μA
EN = low, RAMP = 19 V
−1
+1
μA
PWM COMPARATOR
PWM Comparator Offset2
VOSRPM
VRAMP − VCOMP
±3
mV
RPM COMPARATOR
RPM Current
IRPM
VVID = 1.2 V, RT = 215 k
Ω
See also IRPM(RT) formula
−9
μA
RPM Comparator Offset2
VOSRPM
VCOMP − (1 + VRPMTH)
±3
mV
EPWM CLOCK SYNC
Trigger Threshold2
Relative to COMP sampled TCLK time earlier
3-phase configuration
2-phase configuration
1-phase configuration
350
400
450
mV
mV
mV
TRDET#
Trigger Threshold2
Relative to COMP sampled TCLK time earlier
3-phase configuration
2-phase configuration
1-phase configuration
-450
-500
-600
mV
mV
mV
TRDET# Low Voltage2
VLTRDET
Logic low, ITRDET#sink = 4mA
30
300
mV
TRDET# Leakage Current
IHTRDET
Logic high, VTRDET# = VCC
5
μA
SWITCH AMPLIFIER
SW Common Mode Range2
VSW(X)CM
Operation of interest for current sensing
−600
+200
mV
SWFB Input Resistance
RSW(X)
SWX = 0 V, SWFB = 0 V
20
35
50
ZERO CURRENT SWITCHING
COMPARATOR
SW ZCS Threshold
VDCM(SW1)
DCM mode, DPRSLP = 3.3 V
−3
mV
Masked Off-Time
tOFFMSKD
Measured from DRVH1 neg edge to DRVH1 pos
edge at max frequency of operation
600
ns
SYSTEM I/O BUFFERS
VID[6:0], DPRSLP, PSI# INPUTS
Input Voltage
Refers to driving signal level
Logic low
Logic high
0.7
0.3
V
V


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